Airtel now announced 10GB 3G/4G data only 100 rupees. This biggest Airtel offer data plan. The data plan will have validity up to 28 days. Airtel postpaid only users can enjoy this service.India’s biggest telecom company Bharti Airtel said that this offer is valid for prepaid customer is now . This is not the first time Airtel has responded to the threat from Jio.Last year, Airtel offered 10 GB internet data at Rs 259.